Sabine Rau-Oberhuber is Co-Founder of Turntoo, a Dutch service company focused on achieving a circular economy. Turntoo assists clients from the public and private sector to develop circular propositions or procurement strategies and works with municipalities on circular city strategies and circular area development. Turntoo regards the necessary transformation taking place on different levels: the redesign of products and supply chains; the financial and business models involved; the data and IT infrastructure supporting the transition and the mental transformation leading to a new way of thinking. With a multidisciplinary team, Turntoo is working with clients that wish to transform to a regenerative model. Together with her husband, internationally recognized architect and sustainable pioneer Thomas Rau, Rau-Oberhuber co-authored the book Material Matters, which dissects and critiques our current linear systems of production, consumption and waste, proposing a new economic paradigm to radically change the status quo. One of the ideas proposed in the book is that buildings should be given a raw materials “passport” and material rights to keep them out of the landfill and instead in a constant cycle of use.